Kaisai KOU-12HDN1 Service Manual Download Page 122

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Troubleshooting

MLCAC-UTSM-2010-10

118 Outdoor Units

10. P3 malfunction

P3 display

Current protection of compressor

Judge 1: Check whether the input current of the power supply wire is more

than 20A (For 36K & 48K with 1 phase, it is 30A)

Check whether the refrigerant system is ok

Yes

Judge 2: Check whether the outdoor ambient temperature is too high

Yes

Stop the unit

Replace outdoor main board

Judge 3: Check whether the outdoor unit is bad ventilation

Yes

Make the outdoor unit ventilate well

Judge 4: Check whether the heat exchanger is dirty

Yes

Clean the heat exchanger

Judge 5: The refrigerant pipe is blocked

Yes

Let the refrigerant out, then use the high pressure

nitrogen or refrigerant to blow pipe, vacuumize and

charge the refrigerant again

Summary of Contents for KOU-12HDN1

Page 1: ...Service Manual 2010...

Page 2: ......

Page 3: ...i Part 1 General Information 1 Part 2 Indoor Units 7 Part 3 Outdoor Units 86 Part 4 Installation 124 Part 5 Control 135 The specifications designs and information in this book are subject to change wi...

Page 4: ......

Page 5: ...2010 10 General Information General Information 1 Part 1 General Information 1 Model Names of Indoor Outdoor Units 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 4 3 Nomenclature 5 4...

Page 6: ...units KOU 12HDN1 Rotary DC Inverter GMCC KCA2 12HRDN1 Q KTB 12HWDN1 KUB 12HRDN1 KFA 12HRDN1 KOUA 18HDN1 C0 Scroll DC Inverter Shenyang SANYO KCA2 18HRDN1 Q KTB 18HWDN1 KUB 18HRDN1 KCC 18HRDN1 KFA 18HR...

Page 7: ...MLCAC UTSM 2010 10 External Appearance General Information 3 2 External Appearance 2 1 Indoor Units Duct Ceiling Floor Four way Cassette New Compact Four way cassette Console...

Page 8: ...ternal Appearance MLCAC UTSM 2010 10 4 General Information 2 2 Outdoor Units KOU 12HDN1 KOUA 18HDN1 C0 KOUB 24HDN1 KOU 30HDN1 KOUB 36HDN1 R KOU 36HDN1 KOU 48HDN1 KOUB 48HDN1 R KOUA 60HRDN1 KOUD 60HDN1...

Page 9: ...Time Design C Third Time Design Product Category C Cassette Type T Duct Type U Ceiling Floor Type H High Static Pressure Duct Type Midea 3 2 Outdoor Unit M O U D 60 H D N1 R Power Supply R 380 415V 3...

Page 10: ...small starting current 4 4 Intelligent refrigerant adjustment technology Throttle part is made up of capillary and electronic expansion valve EXV The outdoor unit can output the most accurate capacit...

Page 11: ...MLCAC UTSM 2010 10 Indoor Units Indoor Units 7 Part 2 Indoor Units New Four way Cassette Type Compact 8 Four way Cassette Type 18 Duct Type 35 Ceiling Floor Type 53 Console Type 72...

Page 12: ...New Four way Cassette Type Compact 1 Features 9 2 Specifications 10 3 Dimensions 11 4 Service Space 11 5 Wiring Diagrams 12 6 Air Velocity and Temperature Distributions 13 7 Electric Characteristics...

Page 13: ...to the heat exchange uniform 4 Improvement for easy installation and maintenance Little space is required for installation into a shallow ceiling Because of the compactness and weight reduction of the...

Page 14: ...0 210 26 74 Number of circuits 2 4 Indoor air flow Hi Mi Lo m 3 h 683 530 510 800 710 560 Indoor noise level sound pressure dB A 42 41 38 42 41 38 Indoor unit Dimension W H D body mm 570 260 570 570 2...

Page 15: ...MLCAC UTSM 2010 10 Dimensions New Four way Cassette Compact 11 3 Dimensions 4 Service Space...

Page 16: ...Wiring Diagrams MLCAC UTSM 2010 10 12 New Four way Cassette Compact 5 Wiring Diagrams KCA2 12HRDN1 Q KCA2 18HRDN1 Q...

Page 17: ...MLCAC UTSM 2010 10 Air Velocity and Temperature Distributions New Four way Cassette Compact 13 6 Air Velocity and Temperature Distributions Airflow velocity Temperature...

Page 18: ...ristics Model Indoor Units Power Supply Hz MFA Min Max MFA KCA2 12HRDN1 Q 50 220 240V 198V 254V 20 KCA2 18HRDN1 Q 50 220 240V 198V 254V 15 Remark MFA Max Fuse Amps A 8 Sound Levels 1 0m FOUR WAY CASSE...

Page 19: ...9 Accessories Name Shape Quantity 1 Drain joint Be provided in outdoor unit 1 2 Remote controller 1 3 Remote controller holder 1 4 Mounting screw ST2 9 10 C H 2 5 Alkaline dry batteries AM4 2 6 Owner...

Page 20: ...Field Wiring MLCAC UTSM 2010 10 16 New Four way Cassette Compact 11 Field Wiring KCA2 12HRDN1 Q KCA2 18HRDN1 Q...

Page 21: ...MLCAC UTSM 2010 10 Field Wiring New Four way Cassette Compact 17 KCA2 12HRDN1 Q KCA2 18HRDN1 Q...

Page 22: ...way Cassette Type 1 Features 19 2 Specifications 22 3 Dimensions 25 4 Service Space 26 5 Wiring Diagrams 27 6 Air Velocity and Temperature Distributions 28 7 Electric Characteristics 29 8 Sound Levels...

Page 23: ...evaporator sufficient airflow volume guarantees the excellent capacity 4 The adoption of the most advanced 3 Dimensional Screw fan Reduces the air resistance passing through Smoothes the air flow Mak...

Page 24: ...ed can acquire high heat exchanger effect 10 More strengthening rib design around the panel preventing the distortion for the panel 11 New outlet frame design to make the phenomena of coagulation grea...

Page 25: ...drop height is higher Max pipe length up to 50m refer to and Max drop height up to 30m refer to 17 Optimal design smaller Control Box Space saving and convenient for wiring Using fire resistance galva...

Page 26: ...ide dia and type mm 7 Inner grooved copper tube 7 Inner grooved copper tube 7 Inner grooved copper tube Coil length height width mm 1990x168x26 74 1990x168x26 74 1990x252x26 74 Number of circuits 8 8...

Page 27: ...nner grooved copper tube Coil length height width mm 1990x252x26 74 1990x252x26 74 Number of circuits 12 12 Indoor air flow Hi Med Lo m 3 h 1545 1354 1187 1545 1354 1187 Indoor noise level Hi Med Lo d...

Page 28: ...type mm 7 Inner grooved copper tube 7 Inner grooved copper tube 7 Inner grooved copper tube Coil length height width mm 1990x252x26 74 1990x252x26 74 2080 252 40 11 Number of circuits 12 12 12 Indoor...

Page 29: ...0 Dimensions Four way Cassette Type 25 3 Dimensions Unit mm MODEL Btu h A B C H 18000 230 12 7 6 4 260 24000 230 15 9 9 5 260 30000 300 15 9 9 5 330 36000 300 15 9 9 5 330 48000 300 15 9 9 5 330 60000...

Page 30: ...Service Space MLCAC UTSM 2010 10 26 Four way Cassette Type 4 Service Space For 18 48k For 60k...

Page 31: ...MLCAC UTSM 2010 10 Wiring Diagrams Four way Cassette Type 27 5 Wiring Diagrams KCC 18HRDN1 KCC 24HRDN1 KCC 30HRDN1 KCC 36HRDN1 KCC 48HRDN1 KCC 60HRDN1...

Page 32: ...ronic expansion valve Oil separator Compressor Low pressure switch Oil return Capillary High pressure switch Low pressure liquid accumulator Evaporator Capillary Outdoor unit Indoor unit 4 way valve C...

Page 33: ...DN1 50 220 240 198 254 15 KCC 30HRDN1 50 220 240 198 254 15 KCC 36HRDN1 50 220 240 198 254 15 KCC 48HRDN1 50 220 240 198 254 15 KCC 60HRDN1 50 220 240 198 254 15 KCC 60HRDN1 50 220 240 207 253 15 Rema...

Page 34: ...inpipe Fittings Out let pipe sheath 1 Out let pipe clasp 1 Drain joint 1 Seal ring 1 Remote controller Its Frame Remote controller Its Frame 1 Remote controller holder 1 Mounting screw ST2 9 10 C H 2...

Page 35: ...lation sheath 2 Drainpipe Fittings 6 Out let pipe 1 7 Out let pipe sheath 1 8 Out let pipe clasp 1 9 Tightening band 20 Remote controller Its Frame 10 Remote controller 1 11 Remote controller holder 1...

Page 36: ...The Specification of Power MLCAC UTSM 2010 10 32 Four way Cassette Type 10 The Specification of Power...

Page 37: ...MLCAC UTSM 2010 10 Field Wiring Four way Cassette Type 33 11 Field Wiring Wiring chart...

Page 38: ...Field Wiring MLCAC UTSM 2010 10 34 Four way Cassette Type...

Page 39: ...5 Duct Type 1 Features 36 2 Specifications 37 3 Dimensions 40 4 Service Space 41 5 Wiring Diagrams 42 6 Static Pressure 43 7 Electric Characteristics 45 8 Sound Levels 46 9 Accessories 47 10 The Speci...

Page 40: ...2010 10 36 Duct Type 1 Features New structure design Built in drainage pump Optical Two air intake ways from below or rear standard Wire controller is standard Three speeds indoor unit Fresh air inle...

Page 41: ...lic aluminum Hydrophilic aluminum Hydrophilic aluminum Tube outside dia and type mm 7 Inner grooved copper tube 7 Inner grooved copper tube 7 Inner grooved copper tube Coil length height width mm 735...

Page 42: ...luminum Hydrophilic aluminum Hydrophilic aluminum Tube outside dia and type mm 7 Inner grooved copper tube 7 Inner grooved copper tube 7 Inner grooved copper tube Coil length height width mm 955 336 5...

Page 43: ...minum Hydrophilic aluminum Hydrophilic aluminum Tube outside dia and type mm 7 Inner grooved copper tube 7 Inner grooved copper tube 7 Inner grooved copper tube Coil length height width mm 1030 378 53...

Page 44: ...e Air return opening size Size of outline dimension mounted plug A B C D E F G H I J K L M 12 18 920 210 635 570 65 713 35 119 815 200 80 960 350 24 920 270 635 570 65 713 35 179 815 260 20 960 350 30...

Page 45: ...SM 2010 10 Service Space Duct Type 41 4 Service Space Ensure enough space required for installation and maintenance All the indoor units reserve the hole to joint the fresh air pipe The hole size as f...

Page 46: ...E PL EASE USE SHI ELDE R WI RE F OR C OMM BUS WIR E 202070390385 P3 BLACK CH H P2 CH P3 HIGH FAN SUPER HIGH FAN 9 8 7 5 14000W 10500W 9000W 7100W ENC1 4 5600W 5300W CN9 TO OUTDOOR COMM BUS TO CCM COM...

Page 47: ...atic pressure Pa 3 Air volume m h 1100 1000 900 800 700 600 Pa 90 80 70 60 50 40 30 20 10 Low speed 200 300 400 500 Super high speed KTB1 24HWDN1 KTB 30HWDN1 700 1500 1200 Mid speed High speed Externa...

Page 48: ...200 1800 2000 Super high speed Pa 3100 2800 1900 1600 Low speed 10 20 30 40 50 60 70 80 90 1000 Air volume m h 3 External static pressure Pa High speed Mid speed 1300 2200 2500 Pa 100 Super high speed...

Page 49: ...Power Supply Hz Voltage Min Max MFA KTB 12HWDN1 50 220 240 207 253 15 KTB 18HWDN1 50 220 240 207 253 15 KTB1 24HWDN1 50 220 240 207 253 15 KTB 30HWDN1 50 220 240 207 253 15 KTB 36HWDN1 50 220 240 207...

Page 50: ...nd Levels Suction Discharge Microphone 1 4m Concealed Duct Type Duct Duct Model Noise level dB A H M L KTB 12HWDN1 37 30 26 KTB 18HWDN1 44 36 33 KTB1 24HWDN1 45 43 41 KTB 30HWDN1 46 44 42 KTB 36HWDN1...

Page 51: ...for cooling heating Drain joint 1 Seal ring 1 Remote controller Its Frame Remote controller 1 Frame 1 Mounting screw ST2 9 10 C H 2 Alkaline dry batteries AM4 2 Remote controller manual 1 Wired contr...

Page 52: ...The Specification of Power MLCAC UTSM 2010 10 48 Duct Type 10 The Specification of Power...

Page 53: ...MLCAC UTSM 2010 10 Field Wiring Duct Type 49 11 Field Wiring...

Page 54: ...Field Wiring MLCAC UTSM 2010 10 50 Duct Type Air conditioner link circuit...

Page 55: ...MLCAC UTSM 2010 10 Field Wiring Duct Type 51...

Page 56: ...Field Wiring MLCAC UTSM 2010 10 52 Duct Type...

Page 57: ...Floor Type 1 Features 54 2 Specifications 55 3 Dimensions 58 4 Service Space 60 5 Wiring Diagrams 61 6 Air Velocity and Temperature Distributions 63 7 Electric Characteristics 65 8 Sound Levels 66 9...

Page 58: ...e air flow Air flow directional control minimizes the air resistance and produces wilder air flow to vertical direction The range of horizontal air discharge is widened which secures wider air flow di...

Page 59: ...1 7 1 7 Fin type code Hydrophilic aluminium Hydrophilic aluminum Hydrophilic aluminum Tube outside dia and type mm 9 53 Inner grooved copper tube 9 53 Inner grooved copper tube 9 53 Inner grooved copp...

Page 60: ...de Hydrophilic aluminum Hydrophilic aluminum Hydrophilic aluminum Tube outside dia and type mm 9 53 Inner grooved copper tube 9 53 Inner grooved copper tube 9 53 Inner grooved copper tube Coil length...

Page 61: ...drophilic aluminum Hydrophilic aluminum Hydrophilic aluminum Tube outside dia and type mm 9 53 Inner grooved copper tube 9 53 Inner grooved copper tube 9 53 Inner grooved copper tube Coil length heigh...

Page 62: ...Dimensions MLCAC UTSM 2010 10 58 Ceiling Floor Type 3 Dimensions a Wall mounting installation b Ceiling installation...

Page 63: ...0 Dimensions Ceiling Floor Type 59 Capacity Btu h A B C D E F G H 12000 24000Btu h 990 660 206 505 506 907 200 203 30000 36000Btu h 1280 660 206 795 506 1195 200 203 48000 60000Btu h 1670 680 244 1070...

Page 64: ...Service Space MLCAC UTSM 2010 10 60 Ceiling Floor Type 4 Service Space...

Page 65: ...MLCAC UTSM 2010 10 Wiring Diagrams Ceiling Floor Type 61 5 Wiring Diagrams KUB 12HRDN1...

Page 66: ...Wiring Diagrams MLCAC UTSM 2010 10 62 Ceiling Floor Type KUB 18HRDN1 KUB 24HRDN1 KUB 30HRDN1 KUB 36HRDN1 KUB 48HRDN1 KUB 60HRDN1...

Page 67: ...ocity Electronic expansion valve Oil separator Compressor Low pressure switch Oil return Capillary High pressure switch Low pressure liquid accumulator Evaporator Capillary Outdoor unit Indoor unit 4...

Page 68: ...Air Velocity and Temperature Distributions MLCAC UTSM 2010 10 64 Ceiling Floor Type Discharge angle 60 FLOOR Airflow velocity Temperature...

Page 69: ...Unit Power Supply Hz Voltage Min Max MFA MUB 12HRDN1 50 220 240 198 254 20 MUB 18HRDN1 50 220 240 198 254 15 MUB 24HRDN1 50 220 240 198 254 15 MUB 30HRDN1 50 220 240 198 254 15 MUB 36HRDN1 50 220 240...

Page 70: ...10 66 Ceiling Floor Type 8 Sound Levels Ceiling Floor Model Noise level dB A H M L KUB 12HRDN1 40 37 33 KUB 18HRDN1 43 41 38 KUB 24HRDN1 45 43 40 KUB 30HRDN1 45 43 40 KUB 36HRDN1 45 43 40 KUB 48HRDN1...

Page 71: ...n fittings Name Shape Quantity 1 Hook 2 2 Hanging arm 2 Remote controller Its holder 3 Remote controller 1 4 Remote controller holder 1 5 Mounting screw ST2 9 10 C H 2 6 Alkaline dry batteries AM4 2 O...

Page 72: ...The Specification of Power MLCAC UTSM 2010 10 68 Ceiling Floor Type 10 The Specification of Power...

Page 73: ...MLCAC UTSM 2010 10 Field Wiring Ceiling Floor Type 69 11 Field Wiring...

Page 74: ...Field Wiring MLCAC UTSM 2010 10 70 Ceiling Floor Type...

Page 75: ...MLCAC UTSM 2010 10 Field Wiring Ceiling Floor Type 71...

Page 76: ...pe 1 Features 73 2 Specifications 74 3 Dimensions 75 4 Service Space 76 5 Wiring Diagrams 77 6 Air Velocity and Temperature Distributions 78 7 Electric Characteristics 79 8 Sound Levels 80 9 Accessori...

Page 77: ...ing or lower wall applications as a floor standing floor model it can be semi or fully recessed without loss of capacity 1 5 High efficiency filter built in Formaldehyde nemesis filter active carbon a...

Page 78: ...Hydrophilic aluminum Hydrophilic aluminum Tube outside dia and type mm 7 Inner grooved copper tube 7 Inner grooved copper tube Coil length height width mm 512x378x26 74 512x378x26 74 Number of circuit...

Page 79: ...MLCAC UTSM 2010 10 Dimensions Console Type 75 3 Dimensions KFA 12HRDN1 KFA 18HRDN1...

Page 80: ...Service Space MLCAC UTSM 2010 10 76 Console Type 4 Service Space...

Page 81: ...ROOM TE MPERATURE PIPE TE MPERATURE CONNECT OR S CONNECT OR S P C BOARD SOCKETS WIRING DIAGRAM INDOOR UNIT CODE PART NAME INDOOR DC FAN MOTOR UPPER O UT LET SWIN G MOTOR XT1 CN13 CN6 M1 M2 RT1 RT2 M2...

Page 82: ...Air Velocity and Temperature Distributions MLCAC UTSM 2010 10 78 Console Type 6 Air Velocity and Temperature Distributions Discharge angle 60 Airflow velocity Temperature...

Page 83: ...ectric Characteristics Console Type 79 7 Electric Characteristics Model Indoor Unit Power Supply Hz Voltage Min Max MFA KFA 12HRDN1 50 220 240V 198V 254V 16 KFA 18HRDN1 50 220 240V 198V 254V 16 Remark...

Page 84: ...Sound Levels MLCAC UTSM 2010 10 80 Console Type 8 Sound Levels Model Noise level dB A Highest Higher H M L KFA 12HRDN1 38 35 33 31 28 KFA 18HRDN1 44 41 39 37 34...

Page 85: ...9 Accessories KFA 12HRDN1 KFA 18HRDN1 Name Shape Quantity Installation fittings Hook 2 Remote controller Its Frame Remote controller 1 Frame 1 Mounting screw ST2 9 10 C H 2 Alkaline dry batteries AM4...

Page 86: ...The Specification of Power MLCAC UTSM 2010 10 82 Console Type 10 The Specification of Power...

Page 87: ...MLCAC UTSM 2010 10 Field Wiring Console Type 83 11 Field Wiring...

Page 88: ...Field Wiring MLCAC UTSM 2010 10 84 Console Type...

Page 89: ......

Page 90: ...0 86 Outdoor Units Part 3 Outdoor Units 1 Specification 87 2 Dimensions 92 3 Service Space 93 4 Piping Diagrams 94 5 Wiring Diagrams 95 6 Electric Characteristics 100 7 Operation Limits 101 8 Sound Le...

Page 91: ...copper tube Coil length x height x width mm 654 558 8 44 778 660 38 1 Number of circuits 2 2 Outdoor air flow Hi Low m 3 h 2500 1600 2570 2300 Sound level sound pressure Hi Low dB A 48 44 51 46 Outdo...

Page 92: ...length x height x width mm 758x813x44 876x914 4x44 Number of circuits 2 4 Outdoor air flow Hi Low m 3 h 3200 2850 5000 4800 Sound level sound pressure Hi Low dB A 53 48 57 50 Outdoor unit Dimension W...

Page 93: ...ngth x height x width mm 887 x 1220x 66 876 914 4 44 Number of circuits 8 4 Outdoor air flow Hi Low m 3 h 6000 5800 5000 4800 Sound level sound pressure Hi Low dB A 57 52 55 50 Outdoor unit Dimension...

Page 94: ...gth x height x width mm 887 x 1220x 66 887 1220 44 Number of circuits 8 8 Outdoor air flow Hi Low m 3 h 6000 5800 6000 5800 Sound level sound pressure Hi Low dB A 59 54 59 54 Outdoor unit Dimension W...

Page 95: ...x height x width mm 887 1220 44 887 1220 66 Number of circuits 4 8 Outdoor air flow Hi Low m 3 h 6000 5800 6000 5800 Sound level sound pressure Hi Low dB A 59 54 59 54 Outdoor unit Dimension W x D x H...

Page 96: ...335 360 312 324 695 KOUB 24HDN1 895 590 333 355 302 313 862 KOU 30HDN1 990 624 366 396 340 354 966 KOU 36HDN1 940 600 376 400 340 360 1245 KOUB 36HDN1 R 990 624 366 396 340 354 966 KOU 48HDN1 940 600...

Page 97: ...MLCAC UTSM 2010 10 Service Space Outdoor Units 93 3 Service Space...

Page 98: ...pillary Indoor unit 4 way valve High pressure switch Outdoor unit Condenser Low pressure switch Low pressure liquid accumulator KOU 30HDN1 KOU 36HDN1 KOU 48HDN1 KOUB 36HDN1 R KOUB 48HDN1 R KOUA 60HRDN...

Page 99: ...MLCAC UTSM 2010 10 Wiring Diagrams Outdoor Units 95 5 Wiring Diagrams KOU 12HDN1...

Page 100: ...Wiring Diagrams MLCAC UTSM 2010 10 96 Outdoor Units KOUA 18HDN1 C0 KOUB 24HDN1...

Page 101: ...MLCAC UTSM 2010 10 Wiring Diagrams Outdoor Units 97 KOU 30HDN1 KOU 36HDN1 KOU 48HDN1...

Page 102: ...Wiring Diagrams MLCAC UTSM 2010 10 98 Outdoor Units KOUB 36HDN1 R KOUB 48HDN1 R KOUA 60HRDN1...

Page 103: ...MLCAC UTSM 2010 10 Wiring Diagrams Outdoor Units 99 KOUD 60HDN1 R...

Page 104: ...220 240 198 254 30 KOUA 18HDN1 C0 50 220 240 198 254 30 KOUB 24HDN1 50 220 240 198 254 30 KOU 30HDN1 50 220 240 198 254 40 KOU 36HDN1 50 220 240 198 254 40 KOU 48HDN1 50 220 240 198 254 40 KOUB 36HDN1...

Page 105: ...30 35 40 45 Indoor temperature WB Outdoor temperature DB STD Cooling 21 43 17 10 5 0 10 15 25 30 35 20 10 5 0 5 10 15 20 Indoor temperature DB Outdoor temperature WB STD Heating 25 24 15 17 18 60k 10...

Page 106: ...door Units 8 Sound Levels Model Noise level dB A H L KOU 12HDN1 48 44 KOUA 18HDN1 C0 51 46 KOUB 24HDN1 53 48 KOU 30HDN1 57 50 KOU 36HDN1 57 52 KOUB 36HDN1 R 55 50 KOU 48HDN1 59 54 KOUB 48HDN1 R 59 54...

Page 107: ...MLCAC UTSM 2010 10 Troubleshooting Outdoor Units 103 9 Troubleshooting 9 1 Indoor unit malfunction 9 1 1 Display board Compact 4 way cassette Ceiling Floor Normal 4 way cassette Duct...

Page 108: ...Troubleshooting MLCAC UTSM 2010 10 104 Outdoor Units 9 1 2 Troubleshooting For Normal 4 way cassette For compact 4 way cassette 12K...

Page 109: ...MLCAC UTSM 2010 10 Troubleshooting Outdoor Units 105 For compact 4 way cassette 18K ceiling floor High static duct unit For Duct type...

Page 110: ...Troubleshooting MLCAC UTSM 2010 10 106 Outdoor Units...

Page 111: ...emp sensor is abnormal Check whether the resistance of the evaporator temp sensor is correct according to Annex 1 Judge 2 Room temp sensor is abnormal Replace evaporator temp sensor No Yes Check wheth...

Page 112: ...play E2 malfunction in the following part Indoor alarm lamps flash at 1Hz Judge 1 Condenser temp sensor is abnormal Check whether the resistance of the condenser temp sensor is correct according to An...

Page 113: ...r pump work for a few minutes then check whether the system can run normally Replace indoor PCB Trouble is solved Yes No Check whether the water drain pipe is blocked No Solve to make the water can fl...

Page 114: ...E5 Voltage protection of compressor E6 PFC module protection Only for 30K 36K 48K with 1 phase P0 Top temperature protection of compressor P1 High pressure protection P2 Low pressure protection P3 Cur...

Page 115: ...ectly Yes No Judge 4 Check whether the signal wiring between the indoor and outdoor units is broken Yes Replace the broken wiring No Judge 2 Check whether the signal wiring is shield cable or whether...

Page 116: ...ck whether the connecting wiring between the IPM module negative pole and the CN13 on the power board is broken off E3 display Communication malfunction in outdoor IC and DSP Replace the outdoor main...

Page 117: ...and DSP Check whether the indicator lights LED1 or LED2 on the main control board are flashing Replace PCB Yes Install the IC U3 chip of the PCB over again check whether the system can run normally T...

Page 118: ...r the wiring of the condenser temp sensor is broken off Connect the wiring well Yes No Check whether the resistance of condenser temp sensor is wrong refer to the Annex 1 Yes Replace condenser temp se...

Page 119: ...265V No Replace the power board then check whether the system can run normally Check the power supply Yes Replace outdoor main board Yes Trouble is solved No E6 display PFC module protection Check wh...

Page 120: ...normally Yes Replace high pressure switch No Check whether the refrigerant system is ok Replace outdoor main board No Judge 3 Check whether the outdoor ambient temperature is too high Yes Stop the un...

Page 121: ...Stop the unit No Judge 4 The refrigerant of the system is leakage Yes Method Connect the pressure gauge to the gauge joint of the system check whether the pressure is lower than 0 14MPa Leak hunting...

Page 122: ...s Judge 2 Check whether the outdoor ambient temperature is too high Yes Stop the unit Replace outdoor main board No No Judge 3 Check whether the outdoor unit is bad ventilation Yes Make the outdoor un...

Page 123: ...ressor discharge temp is more than 115 C No Check whether the wiring connection is right between compressor discharge temp sensor and PCB according to wiring diagrams Yes Method Check whether the resi...

Page 124: ...No Check whether the resistance of condenser temp sensor is correct refer to the Annex 1 Yes Replace outdoor main board No Replace the temperature sensor Yes Judge1 The outdoor temp is too high Replac...

Page 125: ...two terminals check whether there is the condition that value of resistance is 0 Yes Replace the single phase bridge No No Check whether the connecting line of every reactor is normal If the line is...

Page 126: ...t tightly check ok or not No Yes Check whether the three phase bridge is normal No Replace the three phase bridge No Yes Check whether the 3300 F 400V electrolytic capacitor is normal No Replace this...

Page 127: ...4 0000 36 6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 1...

Page 128: ...10 10 124 Installation Part 4 Installation 1 Precaution on Installation 125 2 Vacuum Dry and Leakage Checking 126 3 Additional Refrigerant Charge 128 4 Water Drainage 129 5 Insulation Work 132 6 Wirin...

Page 129: ...outdoor unit should be closed absolutely as original state Every time you connect it first loosen the nuts at the part of stop value then connect the flare pipe immediately in 5 minutes If the nuts ha...

Page 130: ...t construction environment common vacuum dry special vacuum dry Common vacuum dry procedure Vacuum dry for the first time connect the all purpose detector to the inlet of liquid pipe and gas pipe and...

Page 131: ...oy for the second time Fill nitrogen to 0 5Kgf cm2 Because nitrogen is for drying gas it has vacuum drying effect during vacuum destroy But if the moisture is too much this method can t dry thoroughly...

Page 132: ...cause explosions and accidents so always ensure that the appropriate refrigerant is charged e Refrigerant containers shall be opened slowly f Always use protective gloves and protect your eyes when c...

Page 133: ...lated to prevent atomization Drainpipe should be installed before installing indoor unit After powering on there is somewater in water receiver plate Please check if the drain pump can operate correct...

Page 134: ...50 l hr I D mm Thick Hard PVC 14 25 3 0 Hard PVC 14 88 30 3 5 Hard PVC 88 334 40 4 0 Hard PVC 175 334 50 4 5 Hard PVC 334 80 6 0 4 5 Drainage test 1 Drainage without drain pump After finishing drainp...

Page 135: ...the alarm lamp flashes even overflow from the water receipt plate Keep on pouring water until it gives an alarm signal for high water level check if the pump drains water at once If the water level ca...

Page 136: ...above 100 2 Thickness choice for insulation material Insulation material thickness is as follows Pipe diameter mm Adiabatic material thickness Refrigerant pipe 6 4 25 4 10mm 28 6 38 1 15mm Drainage pi...

Page 137: ...of the pipes Make sure there s no clearance in the joining part of the accessorial insulation material and local preparative insulationmaterial 5 3 Drainage pipe insulation 1 The connection part shou...

Page 138: ...e air conditioner is pre heated by turning on the power 3 According to the user s requirement install the remote controller when the remote controller s signal can reach the indoor unit smoothly 4 Tes...

Page 139: ...MLCAC UTSM 2010 10 Control Control 135 Part 5 Control 1 Wireless Remote Controller 136...

Page 140: ...s Push this button to cancel ON timer and OFF timer When you push the RESET button all current settings are cancelled and get into the condition of beginning In the clock the colon in 0 00 will flash...

Page 141: ...Time OFF 10 Time ON Adjust 2 Fan speed se ttin g 4 Adjus t 1 3 Co ol heat Lock Reset 15 13 12 14 Confirmbutton 1 6 Economic operation TIME ON TI ME OF F C LOCK SWING AIRDIRE CTI ON O K ECO SW ING MOD...

Page 142: ...layed when resetting or electrifying for the first time Press CLOCK for 5s icon indicating hour will flash with 0 5s Press it again icon indicating minute will flash with 0 5s and are used to adjust t...

Page 143: ...mode is selected in a sequence that goes from AUTO COOL DRY HEAT and FAN as the following figure indicates 3 SWING Button Push this switch button to change the louver angle 4 RESET Button When the RE...

Page 144: ...he sequence that goes from AUTO LOW MED to HIGH and then back to Auto 11 TEMP UP Button Push this button to increase the indoor temperature setting or to adjust the timer in a counter clockwise direct...

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